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7da17ad41e
The previous test configuration made it difficult to run a single test with the pytest CLI. There were two major issues: - The Tests directory was not a package. It now includes a __init__.py file and imports from other tests modules are done with relative imports. - setup.cfg always specified the Tests directory. So even if a specific test were specified as a CLI arg, this configuration would also always include all tests. This configuration has been removed to allow specifying a single test on the command line. Contributors can now run specific tests with a single command such as: $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb This makes it easy and faster to iterate on a single test failure and is very familiar to those that have previously used tox and pytest. When running tox or pytest with no arguments, they still discover and runs all tests in the Tests directory.
149 lines
5.2 KiB
Python
149 lines
5.2 KiB
Python
from .helper import unittest, PillowTestCase
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from io import BytesIO
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from PIL import Image
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test_files = ["Tests/images/sugarshack.mpo", "Tests/images/frozenpond.mpo"]
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class TestFileMpo(PillowTestCase):
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def setUp(self):
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codecs = dir(Image.core)
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if "jpeg_encoder" not in codecs or "jpeg_decoder" not in codecs:
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self.skipTest("jpeg support not available")
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def frame_roundtrip(self, im, **options):
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# Note that for now, there is no MPO saving functionality
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out = BytesIO()
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im.save(out, "MPO", **options)
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test_bytes = out.tell()
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out.seek(0)
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im = Image.open(out)
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im.bytes = test_bytes # for testing only
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return im
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def test_sanity(self):
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for test_file in test_files:
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im = Image.open(test_file)
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im.load()
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (640, 480))
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self.assertEqual(im.format, "MPO")
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def test_unclosed_file(self):
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def open():
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im = Image.open(test_files[0])
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im.load()
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self.assert_warning(None, open)
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def test_app(self):
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for test_file in test_files:
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# Test APP/COM reader (@PIL135)
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im = Image.open(test_file)
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self.assertEqual(im.applist[0][0], 'APP1')
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self.assertEqual(im.applist[1][0], 'APP2')
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self.assertEqual(im.applist[1][1][:16],
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b'MPF\x00MM\x00*\x00\x00\x00\x08\x00\x03\xb0\x00')
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self.assertEqual(len(im.applist), 2)
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def test_exif(self):
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for test_file in test_files:
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im = Image.open(test_file)
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info = im._getexif()
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self.assertEqual(info[272], 'Nintendo 3DS')
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self.assertEqual(info[296], 2)
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self.assertEqual(info[34665], 188)
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def test_mp(self):
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for test_file in test_files:
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im = Image.open(test_file)
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mpinfo = im._getmp()
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self.assertEqual(mpinfo[45056], b'0100')
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self.assertEqual(mpinfo[45057], 2)
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def test_mp_attribute(self):
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for test_file in test_files:
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im = Image.open(test_file)
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mpinfo = im._getmp()
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frameNumber = 0
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for mpentry in mpinfo[45058]:
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mpattr = mpentry['Attribute']
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if frameNumber:
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self.assertFalse(mpattr['RepresentativeImageFlag'])
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else:
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self.assertTrue(mpattr['RepresentativeImageFlag'])
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self.assertFalse(mpattr['DependentParentImageFlag'])
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self.assertFalse(mpattr['DependentChildImageFlag'])
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self.assertEqual(mpattr['ImageDataFormat'], 'JPEG')
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self.assertEqual(mpattr['MPType'],
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'Multi-Frame Image: (Disparity)')
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self.assertEqual(mpattr['Reserved'], 0)
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frameNumber += 1
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def test_seek(self):
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for test_file in test_files:
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im = Image.open(test_file)
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self.assertEqual(im.tell(), 0)
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# prior to first image raises an error, both blatant and borderline
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self.assertRaises(EOFError, im.seek, -1)
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self.assertRaises(EOFError, im.seek, -523)
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# after the final image raises an error,
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# both blatant and borderline
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self.assertRaises(EOFError, im.seek, 2)
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self.assertRaises(EOFError, im.seek, 523)
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# bad calls shouldn't change the frame
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self.assertEqual(im.tell(), 0)
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# this one will work
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im.seek(1)
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self.assertEqual(im.tell(), 1)
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# and this one, too
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im.seek(0)
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self.assertEqual(im.tell(), 0)
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def test_n_frames(self):
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im = Image.open("Tests/images/sugarshack.mpo")
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self.assertEqual(im.n_frames, 2)
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self.assertTrue(im.is_animated)
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def test_eoferror(self):
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im = Image.open("Tests/images/sugarshack.mpo")
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n_frames = im.n_frames
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# Test seeking past the last frame
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self.assertRaises(EOFError, im.seek, n_frames)
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self.assertLess(im.tell(), n_frames)
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# Test that seeking to the last frame does not raise an error
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im.seek(n_frames-1)
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def test_image_grab(self):
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for test_file in test_files:
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im = Image.open(test_file)
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self.assertEqual(im.tell(), 0)
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im0 = im.tobytes()
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im.seek(1)
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self.assertEqual(im.tell(), 1)
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im1 = im.tobytes()
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im.seek(0)
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self.assertEqual(im.tell(), 0)
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im02 = im.tobytes()
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self.assertEqual(im0, im02)
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self.assertNotEqual(im0, im1)
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def test_save(self):
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# Note that only individual frames can be saved at present
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for test_file in test_files:
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im = Image.open(test_file)
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self.assertEqual(im.tell(), 0)
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jpg0 = self.frame_roundtrip(im)
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self.assert_image_similar(im, jpg0, 30)
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im.seek(1)
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self.assertEqual(im.tell(), 1)
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jpg1 = self.frame_roundtrip(im)
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self.assert_image_similar(im, jpg1, 30)
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if __name__ == '__main__':
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unittest.main()
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